JDY-22 4.2 Ultra Low Power BLE bluetooth Module Serial Transmissions External Antenna
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SKU: U2I-BG-1328114
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Description
JDY-22 sleep pattern description:
Sleep pattern
Instructions
Functional description
Start wake-up
AT+STARTEN1
Mode 1: wake up call, users need sleep can be controlled by AT+SLEEP command, wake up can be awakened by PWRC pin low level.
Start sleep
AT+STARTENO
Mode 0: the power is very low under this mode. The connection calls the permeable transmission current at 900uA, disconnects the connection current below 200uA (can set the broadcast interval current to 30uA), this mode PWRC pin wake up, such as the serial port in 10 seconds without data or will not be connected to sleep automatically again into sleep
Common problem description:
Problem
Answer to the question
1: how MCU disconnects the bluetooth connection in the connection state
In the connection state, the PWRC pin is pulled down, and the serial port sends AT+DISC to disconnect.
2: how much is the current when the module wakes up
All mode work current is not more than 1mA
3: How much data can be written to serial port once
No byte limit at 9600 baud rate
4: After the serial port is configured, do you need to restart it to take effect?
It is recommended to restart the module when the parameters are set
5: How to test the depth of sleep current in the test module
It is recommended to test the current of VCC and GND pins
Default parameter configuration used in factory:
Sequence
Function
Factory default parameters
Instructions
1
Serial port baud rate
9600
AT+BAUD4
2
Sleep pattern
Start wake-up
AT+STARTEN0
3
Broadcast name
JDY-21
AT+NAMHJDY-21
4
Broadcast interval
200MS
AT+ADVIN1
Package included:
1 x JDY-22 4.2 Ultra Low Power BLE bluetooth Module Serial Transmissions External Antenna
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